/*
 *	wiiuse
 *
 *	Written By:
 *		Michael Laforest	< para >
 *		Email: < thepara (--AT--) g m a i l [--DOT--] com >
 *
 *	Copyright 2006-2007
 *
 *	Mac fields based on wiic_structs.h from WiiC, written By:
 *		Gabriele Randelli
 *		Email: < randelli (--AT--) dis [--DOT--] uniroma1 [--DOT--] it >
 *
 *	Copyright 2010
 *
 *	This file is part of wiiuse.
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 3 of the License, or
 *	(at your option) any later version.
 *
 *	This program is distributed in the hope that it will be useful,
 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *	GNU General Public License for more details.
 *
 *	You should have received a copy of the GNU General Public License
 *	along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *	$Header$
 *
 */

/**
 *	@file
 *
 *	@brief API header file.
 *
 *	If this file is included from inside the wiiuse source
 *	and not from a third party program, then wiimote_internal.h
 *	is also included which extends this file.
 */

/**
 *	@mainpage
 *
 *  @section intro Introduction
 *
 *  WiiUse is a cross-platform C library for accessing the Nintendo Wii
 *  Remote and its related expansions and variations.
 *
 *  @section project Project
 *
 *  This is a friendly fork of the original WiiUse project, which seems
 *  to have gone defunct. This updated version incorporates improvements
 *  from a number of internal forks found across the Internet, and is
 *  intended to be the new "upstream" of the project. The new homepage is
 *  on GitHub, where the source is maintained:
 *
 *    - http://github.com/rpavlik/wiiuse
 *
 *  Contributions (under the GPL 3+) are welcome and encouraged!
 *
 *  @section publicapisec Public API
 *
 *    - @ref publicapi "Public API" - entirely within @ref wiiuse.h
 *      - @ref wiimote "Wiimote device structure"
 *
 */
#ifndef WIIUSE_H_INCLUDED
#define WIIUSE_H_INCLUDED

#define WIIUSE_MAJOR 0
#define WIIUSE_MINOR 15
#define WIIUSE_MICRO 0

#define WIIUSE_VERSION_TRANSFORM(MAJ, MIN, MICRO) (MAJ * 1000000 + MIN * 1000 + MICRO)
#define WIIUSE_HAS_VERSION(MAJ, MIN, MICRO) ( WIIUSE_VERSION_TRANSFORM(MAJ, MIN, MICRO) <= WIIUSE_VERSION_TRANSFORM(WIIUSE_MAJOR, WIIUSE_MINOR, WIIUSE_MICRO) )

#ifndef WIIUSE_PLATFORM
	#if defined(_WIN32)
		#define WIIUSE_PLATFORM
		#define WIIUSE_WIN32
	#elif defined(__linux)
		#define WIIUSE_PLATFORM
		#define WIIUSE_BLUEZ
	#elif defined(__APPLE__)
		#define WIIUSE_PLATFORM
		#define WIIUSE_MAC
	#else
		#error "Platform not yet supported!"
	#endif
#endif

#ifdef WIIUSE_WIN32
	/* windows */
	#ifndef WIN32_LEAN_AND_MEAN
		#define WIN32_LEAN_AND_MEAN 1
	#endif
	#include <windows.h>
#endif
#ifdef WIIUSE_BLUEZ
	/* nix */
	#include <bluetooth/bluetooth.h>
#endif

#ifndef WCONST
	#define WCONST		const
#endif

#if defined(_MSC_VER)
/* MS compilers of pre-VC2010 versions don't have stdint.h
 * and I can't get VC2010's stdint.h to compile nicely in
 * WiiUse
 */
	#include "wiiuse_msvcstdint.h"
#else
	#include <stdint.h>
#endif

#include <stdio.h>                      /* for FILE */

/** @defgroup publicapi External API */
/** @{ */

/** @name Wiimote state flags and macros */
/** @{ */
#define WIIMOTE_STATE_DEV_FOUND				0x0001
#define WIIMOTE_STATE_HANDSHAKE				0x0002	/* actual connection exists but no handshake yet */
#define WIIMOTE_STATE_HANDSHAKE_COMPLETE	0x0004	/* actual connection exists but no handshake yet */
#define WIIMOTE_STATE_CONNECTED				0x0008
#define WIIMOTE_STATE_RUMBLE				0x0010
#define WIIMOTE_STATE_ACC					0x0020
#define WIIMOTE_STATE_EXP					0x0040
#define WIIMOTE_STATE_IR					0x0080
#define WIIMOTE_STATE_SPEAKER				0x0100
#define WIIMOTE_STATE_IR_SENS_LVL1			0x0200
#define WIIMOTE_STATE_IR_SENS_LVL2			0x0400
#define WIIMOTE_STATE_IR_SENS_LVL3			0x0800
#define WIIMOTE_STATE_IR_SENS_LVL4			0x1000
#define WIIMOTE_STATE_IR_SENS_LVL5			0x2000
#define WIIMOTE_STATE_EXP_HANDSHAKE			0x10000	/* actual M+ connection exists but no handshake yet */
#define WIIMOTE_STATE_EXP_EXTERN			0x20000	/* actual M+ connection exists but handshake failed */
#define WIIMOTE_STATE_EXP_FAILED			0x40000	/* actual M+ connection exists but handshake failed */
#define WIIMOTE_STATE_MPLUS_PRESENT			0x80000	/* Motion+ is connected */

#define WIIMOTE_ID(wm)					(wm->unid)

#define WIIMOTE_IS_SET(wm, s)			((wm->state & (s)) == (s))
#define WIIMOTE_IS_CONNECTED(wm)		(WIIMOTE_IS_SET(wm, WIIMOTE_STATE_CONNECTED))
/** @} */

/** @name LED bit masks */
/** @{ */
#define WIIMOTE_LED_NONE				0x00
#define WIIMOTE_LED_1					0x10
#define WIIMOTE_LED_2					0x20
#define WIIMOTE_LED_3					0x40
#define WIIMOTE_LED_4					0x80
/** @} */

/** @name Button codes */
/** @{ */
#define WIIMOTE_BUTTON_TWO				0x0001
#define WIIMOTE_BUTTON_ONE				0x0002
#define WIIMOTE_BUTTON_B				0x0004
#define WIIMOTE_BUTTON_A				0x0008
#define WIIMOTE_BUTTON_MINUS			0x0010
#define WIIMOTE_BUTTON_ZACCEL_BIT6		0x0020
#define WIIMOTE_BUTTON_ZACCEL_BIT7		0x0040
#define WIIMOTE_BUTTON_HOME				0x0080
#define WIIMOTE_BUTTON_LEFT				0x0100
#define WIIMOTE_BUTTON_RIGHT			0x0200
#define WIIMOTE_BUTTON_DOWN				0x0400
#define WIIMOTE_BUTTON_UP				0x0800
#define WIIMOTE_BUTTON_PLUS				0x1000
#define WIIMOTE_BUTTON_ZACCEL_BIT4		0x2000
#define WIIMOTE_BUTTON_ZACCEL_BIT5		0x4000
#define WIIMOTE_BUTTON_UNKNOWN			0x8000
#define WIIMOTE_BUTTON_ALL				0x1F9F
/** @} */

/** @name Nunchuk button codes */
/** @{ */
#define NUNCHUK_BUTTON_Z				0x01
#define NUNCHUK_BUTTON_C				0x02
#define NUNCHUK_BUTTON_ALL				0x03
/** @} */

/** @name Classic controller button codes */
/** @{ */
#define CLASSIC_CTRL_BUTTON_UP			0x0001
#define CLASSIC_CTRL_BUTTON_LEFT		0x0002
#define CLASSIC_CTRL_BUTTON_ZR			0x0004
#define CLASSIC_CTRL_BUTTON_X			0x0008
#define CLASSIC_CTRL_BUTTON_A			0x0010
#define CLASSIC_CTRL_BUTTON_Y			0x0020
#define CLASSIC_CTRL_BUTTON_B			0x0040
#define CLASSIC_CTRL_BUTTON_ZL			0x0080
#define CLASSIC_CTRL_BUTTON_FULL_R		0x0200
#define CLASSIC_CTRL_BUTTON_PLUS		0x0400
#define CLASSIC_CTRL_BUTTON_HOME		0x0800
#define CLASSIC_CTRL_BUTTON_MINUS		0x1000
#define CLASSIC_CTRL_BUTTON_FULL_L		0x2000
#define CLASSIC_CTRL_BUTTON_DOWN		0x4000
#define CLASSIC_CTRL_BUTTON_RIGHT		0x8000
#define CLASSIC_CTRL_BUTTON_ALL			0xFEFF
/** @} */

/** @name Guitar Hero 3 button codes */
/** @{ */
#define GUITAR_HERO_3_BUTTON_STRUM_UP	0x0001
#define GUITAR_HERO_3_BUTTON_YELLOW		0x0008
#define GUITAR_HERO_3_BUTTON_GREEN		0x0010
#define GUITAR_HERO_3_BUTTON_BLUE		0x0020
#define GUITAR_HERO_3_BUTTON_RED		0x0040
#define GUITAR_HERO_3_BUTTON_ORANGE		0x0080
#define GUITAR_HERO_3_BUTTON_PLUS		0x0400
#define GUITAR_HERO_3_BUTTON_MINUS		0x1000
#define GUITAR_HERO_3_BUTTON_STRUM_DOWN	0x4000
#define GUITAR_HERO_3_BUTTON_ALL		0xFEFF
/** @} */

/** @name Wiimote option flags */
/** @{ */
#define WIIUSE_SMOOTHING				0x01
#define WIIUSE_CONTINUOUS				0x02
#define WIIUSE_ORIENT_THRESH			0x04
#define WIIUSE_INIT_FLAGS				(WIIUSE_SMOOTHING | WIIUSE_ORIENT_THRESH)

#define WIIUSE_ORIENT_PRECISION			100.0f
/** @} */

/** @name Expansion codes */
/** @{ */
#define EXP_NONE						0
#define EXP_NUNCHUK						1
#define EXP_CLASSIC						2
#define EXP_GUITAR_HERO_3				3
#define EXP_WII_BOARD					4
#define EXP_MOTION_PLUS					5
#define EXP_MOTION_PLUS_NUNCHUK         6     /* Motion+ in nunchuk pass-through mode */
#define EXP_MOTION_PLUS_CLASSIC         7     /* Motion+ in classic ctr. pass-through mode */
/** @} */

/** @brief IR correction types */
typedef enum ir_position_t {
	WIIUSE_IR_ABOVE,
	WIIUSE_IR_BELOW
} ir_position_t;


/** @name Device Inquiry Macros */
/** @{ */
/**
 *	@brief Check if a button is pressed.
 *	@param dev		Pointer to a wiimote_t or expansion structure.
 *	@param button	The button you are interested in.
 *	@return 1 if the button is pressed, 0 if not.
 */
#define IS_PRESSED(dev, button)		((dev->btns & button) == button)

/**
 *	@brief Check if a button is being held.
 *	@param dev		Pointer to a wiimote_t or expansion structure.
 *	@param button	The button you are interested in.
 *	@return 1 if the button is held, 0 if not.
 */
#define IS_HELD(dev, button)			((dev->btns_held & button) == button)

/**
 *	@brief Check if a button is released on this event.					\n\n
 *			This does not mean the button is not pressed, it means		\n
 *			this button was just now released.
 *	@param dev		Pointer to a wiimote_t or expansion structure.
 *	@param button	The button you are interested in.
 *	@return 1 if the button is released, 0 if not.
 *
 */
#define IS_RELEASED(dev, button)		((dev->btns_released & button) == button)

/**
 *	@brief Check if a button has just been pressed this event.
 *	@param dev		Pointer to a wiimote_t or expansion structure.
 *	@param button	The button you are interested in.
 *	@return 1 if the button is pressed, 0 if not.
 */
#define IS_JUST_PRESSED(dev, button)	(IS_PRESSED(dev, button) && !IS_HELD(dev, button))

/**
 *	@brief Return the IR sensitivity level.
 *	@param wm		Pointer to a wiimote_t structure.
 *	@param lvl		[out] Pointer to an int that will hold the level setting.
 *	If no level is set 'lvl' will be set to 0.
 */
#define WIIUSE_GET_IR_SENSITIVITY(wm, lvl)									\
			do {														\
				if ((wm->state & 0x0200) == 0x0200) 		*lvl = 1;	\
				else if ((wm->state & 0x0400) == 0x0400) 	*lvl = 2;	\
				else if ((wm->state & 0x0800) == 0x0800) 	*lvl = 3;	\
				else if ((wm->state & 0x1000) == 0x1000) 	*lvl = 4;	\
				else if ((wm->state & 0x2000) == 0x2000) 	*lvl = 5;	\
				else									*lvl = 0;		\
			} while (0)

#define WIIUSE_USING_ACC(wm)			((wm->state & 0x020) == 0x020)
#define WIIUSE_USING_EXP(wm)			((wm->state & 0x040) == 0x040)
#define WIIUSE_USING_IR(wm)				((wm->state & 0x080) == 0x080)
#define WIIUSE_USING_SPEAKER(wm)		((wm->state & 0x100) == 0x100)

#define WIIUSE_IS_LED_SET(wm, num)		((wm->leds & WIIMOTE_LED_##num) == WIIMOTE_LED_##num)
/** @} */

/*
 *	This is left over from an old hack, but it may actually
 *	be a useful feature to keep so it wasn't removed.
 */
#ifdef WIIUSE_WIN32
	#define WIIMOTE_DEFAULT_TIMEOUT		10
	#define WIIMOTE_EXP_TIMEOUT			10
#endif

#define WIIUSE_SYNC_HANDSHAKE


typedef unsigned char byte;
typedef char sbyte;

struct wiimote_t;
struct vec3b_t;
struct orient_t;
struct gforce_t;


/**
 *      @brief Callback that handles a read event.
 *
 *      @param wm               Pointer to a wiimote_t structure.
 *      @param data             Pointer to the filled data block.
 *      @param len              Length in bytes of the data block.
 *
 *      @see wiiuse_init()
 *
 *      A registered function of this type is called automatically by the wiiuse
 *      library when the wiimote has returned the full data requested by a previous
 *      call to wiiuse_read_data().
 */
typedef void (*wiiuse_read_cb)(struct wiimote_t* wm, byte* data, uint16_t len);


/**
 *	@brief Data read request structure.
 */
struct read_req_t {
	wiiuse_read_cb cb;			/**< read data callback											*/
	byte* buf;					/**< buffer where read data is written							*/
	uint32_t addr;			/**< the offset that the read started at						*/
	uint16_t size;		/**< the length of the data read								*/
	uint16_t wait;		/**< num bytes still needed to finish read						*/
	byte dirty;					/**< set to 1 if not using callback and needs to be cleaned up	*/

	struct read_req_t* next;	/**< next read request in the queue								*/
};

/**
 *  @struct ang3s_t
 *  @brief Roll/Pitch/Yaw short angles.
 */
typedef struct ang3s_t {
	int16_t roll, pitch, yaw;
} ang3s_t;

/**
 *  @struct ang3f_t
 *  @brief Roll/Pitch/Yaw float angles.
 */
typedef struct ang3f_t {
	float roll, pitch, yaw;
} ang3f_t;

/**
 *	@brief Unsigned x,y byte vector.
 */
typedef struct vec2b_t {
	byte x, y;
} vec2b_t;


/**
 *	@brief Unsigned x,y,z byte vector.
 */
typedef struct vec3b_t {
	byte x, y, z;
} vec3b_t;


/**
 *	@brief Signed x,y,z float struct.
 */
typedef struct vec3f_t {
	float x, y, z;
} vec3f_t;


/**
 *	@brief Orientation struct.
 *
 *	Yaw, pitch, and roll range from -180 to 180 degrees.
 */
typedef struct orient_t {
	float roll;						/**< roll, this may be smoothed if enabled	*/
	float pitch;					/**< pitch, this may be smoothed if enabled	*/
	float yaw;

	float a_roll;					/**< absolute roll, unsmoothed				*/
	float a_pitch;					/**< absolute pitch, unsmoothed				*/
} orient_t;


/**
 *	@brief Gravity force struct.
 */
typedef struct gforce_t {
	float x, y, z;
} gforce_t;


/**
 *	@brief Accelerometer struct. For any device with an accelerometer.
 */
typedef struct accel_t {
	struct vec3b_t cal_zero;		/**< zero calibration					*/
	struct vec3b_t cal_g;			/**< 1g difference around 0cal			*/

	float st_roll;					/**< last smoothed roll value			*/
	float st_pitch;					/**< last smoothed roll pitch			*/
	float st_alpha;					/**< alpha value for smoothing [0-1]	*/
} accel_t;


/**
 *	@brief A single IR source.
 */
typedef struct ir_dot_t {
	byte visible;					/**< if the IR source is visible		*/

	unsigned int x;					/**< interpolated X coordinate			*/
	unsigned int y;					/**< interpolated Y coordinate			*/

	int16_t rx;						/**< raw X coordinate (0-1023)			*/
	int16_t ry;						/**< raw Y coordinate (0-767)			*/

	byte order;						/**< increasing order by x-axis value	*/

	byte size;						/**< size of the IR dot (0-15)			*/
} ir_dot_t;


/**
 *	@brief Screen aspect ratio.
 */
typedef enum aspect_t {
	WIIUSE_ASPECT_4_3,
	WIIUSE_ASPECT_16_9
} aspect_t;


/**
 *	@brief IR struct. Hold all data related to the IR tracking.
 */
typedef struct ir_t {
	struct ir_dot_t dot[4];			/**< IR dots							*/
	byte num_dots;					/**< number of dots at this time		*/

	enum aspect_t aspect;			/**< aspect ratio of the screen			*/

	enum ir_position_t pos;			/**< IR sensor bar position				*/

	unsigned int vres[2];			/**< IR virtual screen resolution		*/
	int offset[2];					/**< IR XY correction offset			*/
	int state;						/**< keeps track of the IR state		*/

	int ax;							/**< absolute X coordinate				*/
	int ay;							/**< absolute Y coordinate				*/

	int x;							/**< calculated X coordinate			*/
	int y;							/**< calculated Y coordinate			*/

	float distance;					/**< pixel distance between first 2 dots*/
	float z;						/**< calculated distance				*/
} ir_t;


/**
 *	@brief Joystick calibration structure.
 *
 *	The angle \a ang is relative to the positive y-axis into quadrant I
 *	and ranges from 0 to 360 degrees.  So if the joystick is held straight
 *	upwards then angle is 0 degrees.  If it is held to the right it is 90,
 *	down is 180, and left is 270.
 *
 *	The magnitude \a mag is the distance from the center to where the
 *	joystick is being held.  The magnitude ranges from 0 to 1.
 *	If the joystick is only slightly tilted from the center the magnitude
 *	will be low, but if it is closer to the outter edge the value will
 *	be higher.
 */
typedef struct joystick_t {
	struct vec2b_t max;				/**< maximum joystick values	*/
	struct vec2b_t min;				/**< minimum joystick values	*/
	struct vec2b_t center;			/**< center joystick values		*/

	float ang;						/**< angle the joystick is being held		*/
	float mag;						/**< magnitude of the joystick (range 0-1)	*/
	float x;						/**< horizontal position of the joystick (range [-1, 1]	*/
	float y;						/**< vertical position of the joystick (range [-1, 1]	*/
} joystick_t;


/**
 *	@brief Nunchuk expansion device.
 */
typedef struct nunchuk_t {
	struct accel_t accel_calib;		/**< nunchuk accelerometer calibration		*/
	struct joystick_t js;			/**< joystick calibration					*/

	int* flags;						/**< options flag (points to wiimote_t.flags) */

	byte btns;						/**< what buttons have just been pressed	*/
	byte btns_held;					/**< what buttons are being held down		*/
	byte btns_released;				/**< what buttons were just released this	*/

	float orient_threshold;			/**< threshold for orient to generate an event */
	int accel_threshold;			/**< threshold for accel to generate an event */

	struct vec3b_t accel;			/**< current raw acceleration data			*/
	struct orient_t orient;			/**< current orientation on each axis		*/
	struct gforce_t gforce;			/**< current gravity forces on each axis	*/
} nunchuk_t;


/**
 *	@brief Classic controller expansion device.
 */
typedef struct classic_ctrl_t {
	int16_t btns;						/**< what buttons have just been pressed	*/
	int16_t btns_held;				/**< what buttons are being held down		*/
	int16_t btns_released;			/**< what buttons were just released this	*/

	float r_shoulder;				/**< right shoulder button (range 0-1)		*/
	float l_shoulder;				/**< left shoulder button (range 0-1)		*/

	struct joystick_t ljs;			/**< left joystick calibration				*/
	struct joystick_t rjs;			/**< right joystick calibration				*/
} classic_ctrl_t;


/**
 *	@brief Guitar Hero 3 expansion device.
 */
typedef struct guitar_hero_3_t {
	int16_t btns;						/**< what buttons have just been pressed	*/
	int16_t btns_held;				/**< what buttons are being held down		*/
	int16_t btns_released;			/**< what buttons were just released this	*/

	float whammy_bar;				/**< whammy bar (range 0-1)					*/

	struct joystick_t js;			/**< joystick calibration					*/
} guitar_hero_3_t;


/**
 * 	@brief Motion Plus expansion device
 */
typedef struct motion_plus_t {
	byte ext;                           /**< is there a device on the pass-through port? */

	struct ang3s_t raw_gyro;            /**< current raw gyroscope data */
	struct ang3s_t cal_gyro;            /**< calibration raw gyroscope data */
	struct ang3f_t angle_rate_gyro;     /**< current gyro angle rate */
	struct orient_t orient;             /**< current orientation on each axis using Motion Plus gyroscopes */
	byte acc_mode;                      /**< Fast/slow rotation mode for roll, pitch and yaw (0 if rotating fast, 1 if slow or still) */
	int raw_gyro_threshold;             /**< threshold for gyroscopes to generate an event */

	struct nunchuk_t *nc;               /**< pointers to nunchuk & classic in pass-through-mode */
	struct classic_ctrl_t *classic;
} motion_plus_t;

/**
 *	@brief Wii Balance Board "expansion" device.
 *
 *  A Balance Board presents itself as a Wiimote with a permanently-attached
 *  Balance Board expansion device.
 */
typedef struct wii_board_t {
	/** @name Interpolated weight per sensor (kg)
	 *
	 *  These are the values you're most likely to use.
	 *
	 *  See example.c for how to compute total weight and center of gravity
	 *  from these values.
	 */
	/** @{ */
	float  tl;
	float  tr;
	float  bl;
	float  br;
	/** @} */

	/** @name Raw sensor values */
	/** @{ */
	uint16_t  rtl;
	uint16_t  rtr;
	uint16_t  rbl;
	uint16_t  rbr;
	/** @} */

	/** @name Sensor calibration values */
	/** @{ */
	uint16_t  ctl[3]; /* Calibration */
	uint16_t  ctr[3];
	uint16_t  cbl[3];
	uint16_t  cbr[3]; /* /Calibration */
	/** @} */
	uint8_t update_calib;
    uint8_t use_alternate_report;
} wii_board_t;


/**
 *	@brief Generic expansion device plugged into wiimote.
 */
typedef struct expansion_t {
	int type;						/**< type of expansion attached				*/

	struct motion_plus_t mp;

	union {
		struct nunchuk_t nunchuk;
		struct classic_ctrl_t classic;
		struct guitar_hero_3_t gh3;
		struct wii_board_t wb;
	};
} expansion_t;


/**
 *	@brief	Available bluetooth stacks for Windows.
 */
typedef enum win_bt_stack_t {
	WIIUSE_STACK_UNKNOWN,
	WIIUSE_STACK_MS,
	WIIUSE_STACK_BLUESOLEIL
} win_bt_stack_t;


/**
 *	@brief Significant data from the previous event.
 */
typedef struct wiimote_state_t {
	/* expansion_t */
	float exp_ljs_ang;
	float exp_rjs_ang;
	float exp_ljs_mag;
	float exp_rjs_mag;
	uint16_t exp_btns;
	struct orient_t exp_orient;
	struct vec3b_t exp_accel;
	float exp_r_shoulder;
	float exp_l_shoulder;

	/* motion plus */
	short drx;
	short dry;
	short drz;

	/* wiiboard */
	uint16_t exp_wb_rtr;
	uint16_t exp_wb_rtl;
	uint16_t exp_wb_rbr;
	uint16_t exp_wb_rbl;

	/* ir_t */
	int ir_ax;
	int ir_ay;
	float ir_distance;

	struct orient_t orient;
	uint16_t btns;

	struct vec3b_t accel;
} wiimote_state_t;


/**
 *	@brief Events that wiiuse can generate from a poll.
 */
typedef enum WIIUSE_EVENT_TYPE {
	WIIUSE_NONE = 0,
	WIIUSE_EVENT,
	WIIUSE_STATUS,
	WIIUSE_CONNECT,
	WIIUSE_DISCONNECT,
	WIIUSE_UNEXPECTED_DISCONNECT,
	WIIUSE_READ_DATA,
	WIIUSE_WRITE_DATA,
	WIIUSE_NUNCHUK_INSERTED,
	WIIUSE_NUNCHUK_REMOVED,
	WIIUSE_CLASSIC_CTRL_INSERTED,
	WIIUSE_CLASSIC_CTRL_REMOVED,
	WIIUSE_GUITAR_HERO_3_CTRL_INSERTED,
	WIIUSE_GUITAR_HERO_3_CTRL_REMOVED,
	WIIUSE_WII_BOARD_CTRL_INSERTED,
	WIIUSE_WII_BOARD_CTRL_REMOVED,
	WIIUSE_MOTION_PLUS_ACTIVATED,
	WIIUSE_MOTION_PLUS_REMOVED
} WIIUSE_EVENT_TYPE;

/**
 *	@brief Type of wiimote peripheral
 */
typedef enum WIIUSE_WIIMOTE_TYPE {
	WIIUSE_WIIMOTE_REGULAR = 0,
	WIIUSE_WIIMOTE_MOTION_PLUS_INSIDE,
} WIIUSE_WIIMOTE_TYPE;

/**
 *	@brief Main Wiimote device structure.
 *
 *  You need one of these to do pretty much anything with this library.
 */
typedef struct wiimote_t {
	WCONST int unid;						/**< user specified id						*/

#ifdef WIIUSE_BLUEZ
	/** @name Linux-specific (BlueZ) members */
	/** @{ */
	WCONST char bdaddr_str[18];			/**< readable bt address					*/
	WCONST bdaddr_t bdaddr;				/**< bt address								*/
	WCONST int out_sock;				/**< output socket							*/
	WCONST int in_sock;					/**< input socket 							*/
	/** @} */
#endif

#ifdef WIIUSE_WIN32
	/** @name Windows-specific members */
	/** @{ */
	WCONST HANDLE dev_handle;			/**< HID handle								*/
	WCONST OVERLAPPED hid_overlap;		/**< overlap handle							*/
	WCONST enum win_bt_stack_t stack;	/**< type of bluetooth stack to use			*/
	WCONST int timeout;					/**< read timeout							*/
	WCONST byte normal_timeout;			/**< normal timeout							*/
	WCONST byte exp_timeout;			/**< timeout for expansion handshake		*/
	/** @} */
#endif

#ifdef WIIUSE_MAC
	/** @name Mac OS X-specific members */
	/** @{ */
	WCONST void* objc_wm;				/**  WiiuseWiimote* as opaque pointer       */
	/** @} */
#endif

	WCONST int state;						/**< various state flags					*/
	WCONST byte leds;						/**< currently lit leds						*/
	WCONST float battery_level;				/**< battery level							*/

	WCONST int flags;						/**< options flag							*/

#ifndef WIIUSE_SYNC_HANDSHAKE
	WCONST byte handshake_state;			/**< the state of the connection handshake	*/
#endif
	WCONST byte expansion_state;            /**< the state of the expansion handshake	*/
	WCONST struct data_req_t* data_req;		/**< list of data read requests				*/

	WCONST struct read_req_t* read_req;		/**< list of data read requests				*/
	WCONST struct accel_t accel_calib;		/**< wiimote accelerometer calibration		*/
	WCONST struct expansion_t exp;			/**< wiimote expansion device				*/

	WCONST struct vec3b_t accel;			/**< current raw acceleration data			*/
	WCONST struct orient_t orient;			/**< current orientation on each axis		*/
	WCONST struct gforce_t gforce;			/**< current gravity forces on each axis	*/

	WCONST struct ir_t ir;					/**< IR data								*/

	WCONST uint16_t btns;				/**< what buttons have just been pressed	*/
	WCONST uint16_t btns_held;		/**< what buttons are being held down		*/
	WCONST uint16_t btns_released;	/**< what buttons were just released this	*/

	WCONST float orient_threshold;			/**< threshold for orient to generate an event */
	WCONST int32_t accel_threshold;				/**< threshold for accel to generate an event */

	WCONST struct wiimote_state_t lstate;	/**< last saved state						*/

	WCONST WIIUSE_EVENT_TYPE event;			/**< type of event that occurred				*/
	WCONST byte motion_plus_id[6];
    WCONST WIIUSE_WIIMOTE_TYPE type;
} wiimote;

/** @brief Data passed to a callback during wiiuse_update() */
typedef struct wiimote_callback_data_t {
	WCONST int uid;
	WCONST byte leds;
	WCONST float battery_level;
	WCONST struct vec3b_t accel;
	WCONST struct orient_t orient;
	WCONST struct gforce_t gforce;
	WCONST struct ir_t ir;
	WCONST uint16_t buttons;
	WCONST uint16_t buttons_held;
	WCONST uint16_t buttons_released;
	WCONST WIIUSE_EVENT_TYPE event;
	WCONST int state;
	WCONST struct expansion_t expansion;
} wiimote_callback_data_t;

/** @brief Callback type */
typedef void (*wiiuse_update_cb)(struct wiimote_callback_data_t* wm);

/**
 *      @brief Callback that handles a write event.
 *
 *      @param wm               Pointer to a wiimote_t structure.
 *      @param data             Pointer to the sent data block.
 *      @param len              Length in bytes of the data block.
 *
 *      @see wiiuse_init()
 *
 *      A registered function of this type is called automatically by the wiiuse
 *      library when the wiimote has returned the full data requested by a previous
 *      call to wiiuse_write_data().
 */
typedef void (*wiiuse_write_cb)(struct wiimote_t* wm, unsigned char* data, unsigned short len);

typedef enum data_req_s {
	REQ_READY = 0,
	REQ_SENT,
	REQ_DONE
} data_req_s;

/**
 *	@struct data_req_t
 *	@brief Data write request structure.
 */
struct data_req_t {

	byte data[21];					/**< buffer where read data is written						*/
	byte len;
	unsigned int addr;
	data_req_s state;			/**< set to 1 if not using callback and needs to be cleaned up	*/
	wiiuse_write_cb cb;			/**< read data callback											*/
	struct data_req_t *next;
};

/**
 *	@brief Loglevels supported by wiiuse.
 */
typedef enum wiiuse_loglevel {
	LOGLEVEL_ERROR = 0,
	LOGLEVEL_WARNING = 1,
	LOGLEVEL_INFO = 2,
	LOGLEVEL_DEBUG = 3
} wiiuse_loglevel;

/*****************************************
 *
 *	Include API specific stuff
 *
 *****************************************/

#ifdef WIIUSE_WIN32
	#ifdef WIIUSE_STATIC
		#define WIIUSE_EXPORT_DECL
		#define WIIUSE_IMPORT_DECL
	#else
		#define WIIUSE_EXPORT_DECL __declspec(dllexport)
		#define WIIUSE_IMPORT_DECL __declspec(dllimport)
	#endif
#else
	#define WIIUSE_EXPORT_DECL
	#define WIIUSE_IMPORT_DECL
#endif

#ifdef WIIUSE_COMPILE_LIB
	#define WIIUSE_EXPORT WIIUSE_EXPORT_DECL
#else
	#define WIIUSE_EXPORT WIIUSE_IMPORT_DECL
#endif

#ifdef __cplusplus
extern "C" {
#endif

	/* wiiuse.c */
	WIIUSE_EXPORT extern const char* wiiuse_version();

	/** @brief Define indicating the presence of the feature allowing you to
	 *  redirect output for one or more logging levels within the library.
	 */
#define WIIUSE_HAS_OUTPUT_REDIRECTION
	WIIUSE_EXPORT extern void wiiuse_set_output(enum wiiuse_loglevel loglevel, FILE *logtarget);

	WIIUSE_EXPORT extern struct wiimote_t** wiiuse_init(int wiimotes);
	WIIUSE_EXPORT extern void wiiuse_disconnected(struct wiimote_t* wm);
	WIIUSE_EXPORT extern void wiiuse_cleanup(struct wiimote_t** wm, int wiimotes);
	WIIUSE_EXPORT extern void wiiuse_rumble(struct wiimote_t* wm, int status);
	WIIUSE_EXPORT extern void wiiuse_toggle_rumble(struct wiimote_t* wm);
	WIIUSE_EXPORT extern void wiiuse_set_leds(struct wiimote_t* wm, int leds);
	WIIUSE_EXPORT extern void wiiuse_motion_sensing(struct wiimote_t* wm, int status);
	WIIUSE_EXPORT extern int wiiuse_read_data(struct wiimote_t* wm, byte* buffer, unsigned int offset, uint16_t len);
	WIIUSE_EXPORT extern int wiiuse_write_data(struct wiimote_t* wm, unsigned int addr, const byte* data, byte len);
	WIIUSE_EXPORT extern void wiiuse_status(struct wiimote_t* wm);
	WIIUSE_EXPORT extern struct wiimote_t* wiiuse_get_by_id(struct wiimote_t** wm, int wiimotes, int unid);
	WIIUSE_EXPORT extern int wiiuse_set_flags(struct wiimote_t* wm, int enable, int disable);
	WIIUSE_EXPORT extern float wiiuse_set_smooth_alpha(struct wiimote_t* wm, float alpha);
	WIIUSE_EXPORT extern void wiiuse_set_bluetooth_stack(struct wiimote_t** wm, int wiimotes, enum win_bt_stack_t type);
	WIIUSE_EXPORT extern void wiiuse_set_orient_threshold(struct wiimote_t* wm, float threshold);
	WIIUSE_EXPORT extern void wiiuse_resync(struct wiimote_t* wm);
	WIIUSE_EXPORT extern void wiiuse_set_timeout(struct wiimote_t** wm, int wiimotes, byte normal_timeout, byte exp_timeout);
	WIIUSE_EXPORT extern void wiiuse_set_accel_threshold(struct wiimote_t* wm, int threshold);
    WIIUSE_EXPORT extern void wiiuse_wiiboard_use_alternate_report(struct wiimote_t *wm, int enabled);

	/* io.c */
	WIIUSE_EXPORT extern int wiiuse_find(struct wiimote_t** wm, int max_wiimotes, int timeout);
	WIIUSE_EXPORT extern int wiiuse_connect(struct wiimote_t** wm, int wiimotes);
	WIIUSE_EXPORT extern void wiiuse_disconnect(struct wiimote_t* wm);

	/* events.c */
	WIIUSE_EXPORT extern int wiiuse_poll(struct wiimote_t** wm, int wiimotes);

	/**
	 *  @brief Poll Wiimotes, and call the provided callback with information
	 *  on each Wiimote that had an event.
	 *
	 *  Alternative to calling wiiuse_poll yourself, and provides the same
	 *  information struct on all platforms.
	 *
	 *  @return Number of wiimotes that had an event.
	 */
	WIIUSE_EXPORT extern int wiiuse_update(struct wiimote_t** wm, int wiimotes, wiiuse_update_cb callback);

	/* ir.c */
	WIIUSE_EXPORT extern void wiiuse_set_ir(struct wiimote_t* wm, int status);
	WIIUSE_EXPORT extern void wiiuse_set_ir_vres(struct wiimote_t* wm, unsigned int x, unsigned int y);
	WIIUSE_EXPORT extern void wiiuse_set_ir_position(struct wiimote_t* wm, enum ir_position_t pos);
	WIIUSE_EXPORT extern void wiiuse_set_aspect_ratio(struct wiimote_t* wm, enum aspect_t aspect);
	WIIUSE_EXPORT extern void wiiuse_set_ir_sensitivity(struct wiimote_t* wm, int level);

	/* nunchuk.c */
	WIIUSE_EXPORT extern void wiiuse_set_nunchuk_orient_threshold(struct wiimote_t* wm, float threshold);
	WIIUSE_EXPORT extern void wiiuse_set_nunchuk_accel_threshold(struct wiimote_t* wm, int threshold);

	/* wiiboard.c */
	/* this function not currently implemented... */
	WIIUSE_EXPORT extern void wiiuse_set_wii_board_calib(struct wiimote_t *wm);

	WIIUSE_EXPORT extern void wiiuse_set_motion_plus(struct wiimote_t *wm, int status);

#ifdef __cplusplus
}
#endif

/** @} */

#endif /* WIIUSE_H_INCLUDED */

